Stephen Hamstra

Jan. 19, 2014

Stephen Hamstra (BS Mech Egr ’81) of West Michigan won the first place 2014 ASHRAE Technology Award in Educational Facilities – New Construction during the ASHRAE Winter Conference in New York City on Jan. 18, 2014. The award is the highest achievement in technology awards, recognizing outstanding performance in the design and operation of energy-efficient buildings. It is a global competition with entries from around the world.

ASHRAE is the global building technology society with more than 54,000 members focused on building systems, energy efficiency, indoor air quality, refrigeration and sustainability.

Hamstra is the chief technology officer at Greensleeves LLC.  Greensleeves’ intelligent optimization software was an integral component of the project that won the first place honor.

The project was at the University of Findlay, which was able to save $83,000 (57 percent) of its energy cost and $7,500 of their maintenance cost in the first year on the Davis Street Science Building.  This green solution is also eliminating 800+ tons of carbon dioxide emissions per year.

“I am honored to have a wonderful team at Greensleeves,” Hamstra said. “The innovation and advancement of technology on this project has produced outstanding results.”

Greensleeves was the Engineer of Record and held the HVAC construction contract for the project.  Greensleeves inaugural introduction of the technology used on this project was first introduced in West Michigan at the new Gordon Food Service Headquarters in Wyoming, Mich.  Since its introduction there it has been applied in nearly two million square feet of facilities in the United States and  Australia.  Greensleeves has several patents pending for its advanced control technology.

The project was featured in the March 2014 issue of the ASHRAE Journal.

Greensleeves, which focuses on providing clean energy solutions, has locations in Findlay, Ohio; Zeeland, Mich.; and Winter Springs, Fla. Read more at